3pcs MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor Detecting MQ Sensor DIY for Safety Detection System
$6.99
SKU: EB0043594
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10-19 PCS
$6.29
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$5.59
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This product has good sensitivity to methane in a wide concentration , and has the advantages of long life, low cost, and simple driving circuit.
Application:
Widely used in household gas leak alarms, industrial combustible gas alarms and portable gas detectors